Patents Assigned to IMEC
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Publication number: 20120086840Abstract: A method of increasing dynamic range of pixels in an imaging sensor is disclosed. In one aspect, two image captures are performed, one at a first short integration time and one at a second optimum integration time. An electrical value obtained from a pixel or group of pixels at the first short integration time is used to predict the second integration time using a comparison with a set of reference values. The reference values relate to a saturation electrical value for each pixel or group of pixels to predict the second integration time. The first short integration time is determined as a fractional multiple of the saturation electrical value. The second integration times are such that there is no saturation of the pixel or group of pixels. Adjustments can be made to the reference values to allow for offset immunity and variability in light levels during the second integration time.Type: ApplicationFiled: October 6, 2011Publication date: April 12, 2012Applicants: Katholieke Universiteit Leuven, IMECInventors: Adi Xhakoni, David San Segundo Bello, Georges Gielen
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Patent number: 8154176Abstract: Tunable vibration energy scavengers and methods of operating the same are disclosed. The disclosed energy scavengers comprise a beam with a main body, wherein the beam comprises at least one flap and means for changing a shape of the at least one flap, wherein the at least one flap is physically attached to the main body along a longitudinal side of the main body. The disclosed methods comprise tuning the shape of the at least one flap, thereby tuning the stiffness of the structure.Type: GrantFiled: April 7, 2009Date of Patent: April 10, 2012Assignee: Stichting IMEC NederlandInventors: Koray Karakaya, Dennis Hohlfeld
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Publication number: 20120080596Abstract: A laser atom probe system and a method for analysing a specimen by laser atom probe tomography are disclosed. The system includes a specimen holder whereon a specimen to be analyzed may be mounted, the specimen having a tip shape. The system further includes a detector, an electrode arranged between the specimen holder and the detector, and a voltage source configured to apply a voltage difference between the specimen tip and the electrode. The system also includes at least one laser system configured to direct a laser beam laterally at the specimen tip and a tip shape monitoring means configured to detect and monitor the tip shape, and/or a means for altering and/or controlling one or more laser parameters of said laser beam(s) so as to maintain, restore or control said specimen tip shape.Type: ApplicationFiled: September 8, 2011Publication date: April 5, 2012Applicant: IMECInventor: Wilfried Vandervorst
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Patent number: 8148220Abstract: Tunnel field-effect transistors (TFETs) are regarded as successors of metal-oxide semiconductor field-effect transistors (MOSFETs), but silicon-based TFETs typically suffer from low on-currents, a drawback related to the large resistance of the tunnel barrier. To achieve higher on-currents an elongate monocrystalline nanostructure-based TFET with a heterostructure made of a different semiconducting material (e.g. germanium (Ge)) is used. An elongate monocrystalline nanostructure made of a different semiconducting material is introduced which acts as source (or alternatively drain) region of the TFET. The introduction of the heterosection is such that the lattice mismatch between silicon and germanium does not result in a highly defective interface. A dynamic power reduction as well as a static power reduction can result, compared to conventional MOSFET configurations.Type: GrantFiled: November 1, 2011Date of Patent: April 3, 2012Assignees: IMEC, Katholieke Universiteit Leuven, K.U. Leuven R&DInventors: Anne S. Verhulst, William G. Vandenberghe
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Patent number: 8150272Abstract: Systems and methods for transferring incoming single-ended burst signals of which at least one characteristic varies widely from burst to burst onto a pair of differential lines. The systems comprise an input for receiving an incoming burst signal, a signal adaptation block for adapting said widely varying characteristic and a single-ended-to-differential converter. In a first aspect a reset signal for resetting a settings determination block, which controls the signal adaptation block, is sent backwards over the differential lines, preferably using a common-mode signal. In a second aspect, a status freezing mechanism is employed for freezing the settings of the settings determination block after the end of the preamble of an incoming burst.Type: GrantFiled: April 4, 2008Date of Patent: April 3, 2012Assignees: IMEC, Universiteit GentInventors: Peter Ossieur, Tine De Ridder, Johan Bauwelinck, Xing Zhi Qiu, Jan Vandewege
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Patent number: 8148188Abstract: Photoelectrochemical cells and methods are provided, in particular, to the functionalization of semiconductor surfaces such that its semiconducting and light generating properties are maintained and the surface becomes stable in wet environments. In particular the preferred embodiments relate to unstable semiconductor materials which have photocurrent generating properties, and to methods for the functionalization of surfaces with metallic carbon nanotubes (CNTs).Type: GrantFiled: February 25, 2009Date of Patent: April 3, 2012Assignee: IMECInventors: Philippe M. Vereecken, Rufi Kurstjens, Ainhoa Romo Negreira, Daire J. Cott
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Publication number: 20120075634Abstract: Methods and sensors for detecting the presence and/or concentration of an analyte are disclosed. In one aspect, a sensing element for use in a sensor is disclosed. The sensing element comprises a resonant cavity device configured to emit optical radiation at an initial power level, a sensing layer exhibiting an initial refractive index, and a detector. The sensing layer is configured to absorb or adsorb an analyte and, in response to absorbing or adsorbing the analyte, exhibit a modified refractive index that differs from the initial refractive index. The resonant cavity device is further configured to, in response to the sensing layer absorbing or adsorbing the analyte, emit optical radiation at a modified power level based on the modified refractive index. The detector is configured to detect the modified power level.Type: ApplicationFiled: September 21, 2011Publication date: March 29, 2012Applicant: STICHTING IMEC NEDERLANDInventors: Ling Sieben-Xu, Peter Offermans, Devrez Mehmet Karabacak, Mercedes Crego Calama, Sywert Brongersma
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Publication number: 20120075767Abstract: Methods of manufacturing metal-insulator-metal capacitor structures, and the metal-insulator-metal capacitor structures obtained, are disclosed. In one embodiment, a method includes providing a substrate, forming on the substrate a first metal layer comprising a first metal, and using atomic layer deposition with an H2O oxidant to deposit on the first metal layer a protective layer comprising TiO2. The method further includes using atomic layer deposition with an O3 oxidant to deposit on the protective layer a dielectric layer of a dielectric material, and forming on the dielectric layer a second metal layer comprising a second metal. In another embodiment, a metal-insulator-metal capacitor includes a bottom electrode comprising a first metal, a protective layer deposited on the bottom electrode and comprising TiO2, a dielectric layer deposited on the protective layer and comprising a dielectric material, and a top electrode formed on the dielectric layer and comprising a second metal.Type: ApplicationFiled: September 28, 2011Publication date: March 29, 2012Applicant: IMECInventors: Mihaela Ioana Popovici, Johan Swerts, Jorge Kittl, Sven Van Elshocht
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Publication number: 20120077019Abstract: A humidity barrier comprises a mixed matrix membrane, wherein the mixed matrix membrane comprises a polymer matrix with at least a hydrophobic surface, in which polymer matrix porous hydrophilic filler particles are dispersed. The hydrophobic surface may be formed either by hydrophobic polymer material itself or a hydrophobic coating may be provided on top of non-hydrophobic polymer material.Type: ApplicationFiled: September 26, 2011Publication date: March 29, 2012Applicant: STICHTING IMEC NEDERLANDInventors: Wout Knoben, Mercedes Crego Calama, Sywert Brongersma
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Publication number: 20120075604Abstract: Disclosed are methods and systems for determining a topography of a lithographic optical element and/or a holder of a lithographic optical element. In one embodiment, the method includes directing electromagnetic radiation towards a lithographic optical element, where the electromagnetic radiation comprises electromagnetic radiation in a first predetermined wavelength range and electromagnetic radiation in a second predetermined wavelength range. The method further includes using the lithographic optical element to adsorb the electromagnetic radiation in the first predetermined wavelength range, and to reflect at least a portion of the electromagnetic radiation in the second predetermined wavelength range towards a substrate comprising a photosensitive layer, thereby exposing the photosensitive layer to form an exposed photosensitive layer.Type: ApplicationFiled: September 21, 2011Publication date: March 29, 2012Applicant: IMECInventors: Gian Francesco Lorusso, Sang Lee
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Patent number: 8142720Abstract: An article is provided for immobilizing functional organic biomolecules (e.g. proteins, DNA, and the like) through a covalent bond to a thiolate or disulfide monolayer to a metal surface wherein an extra activation step of the surface layer or an activation step of the functional biomolecules or bioreceptors could be avoided. The monolayer can contain, but is not limited to, two moieties. One has a group that resists nonspecific adsorption and another has a group that directly (without activation) reacts with functional groups on the biomolecules. In addition, poly(ethylene oxide) groups are incorporated in the monolayer surfaces to resist the nonspecific adsorption and to enhance the specific affinity interactions. A sensor device including these monolayers is also provided to perform reproducible, sensitive, specific and stable bioanalysis.Type: GrantFiled: July 22, 2010Date of Patent: March 27, 2012Assignee: IMECInventors: Filip Frederix, Kristien Bonroy, Karolien Jans
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Publication number: 20120071730Abstract: Disclosed are methods and systems for adaptive processing of ambulatory electrocardiogram signals. In one embodiment, the method comprises acquiring a plurality of electrocardiogram (ECG) signals and transforming the ECG signals to a component space, thereby producing a set of components representing the ECG signals in the component space. The method further includes evaluating the set of components, adaptively selecting from the set of components a subset of components, and processing the subset of components to identify at least one property of the ECG signals. In some embodiments, the method further includes acquiring non-ECG signals, and adaptively selecting the subset of components comprises adaptively selecting the subset of components based on at least the non-ECG signals.Type: ApplicationFiled: September 16, 2011Publication date: March 22, 2012Applicant: Stichting IMEC NederlandInventor: Inaki Romero
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Patent number: 8140023Abstract: One inventive aspect relates to a system and method for performing communication between a transmitting device and a receiving device along a communication path. The transmit device and the receive device each have at least one antenna. At least one of the devices has a plurality of antennas. The method comprises determining first information about the communication path. The method further comprises determining second information about the desired performance parameters of the communication. The method further comprises selecting based on the first and second information a mode of communication from a predetermined set of communication modes. The set includes a Single Input Single Output (SISO) and at least one Multiple Input Multiple Output (MIMO) communication scheme. The method further comprises performing communication in accordance with the selected mode.Type: GrantFiled: March 20, 2007Date of Patent: March 20, 2012Assignees: IMEC, Katholieke Universiteit LeuvenInventor: Bruno Bougard
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Publication number: 20120063211Abstract: A method for improving writability of an SRAM cell is disclosed. In one aspect, the method includes applying a first voltage higher than the global ground voltage and a third voltage higher than the global supply voltage to the ground supply nodes of the invertors of the SRAM cell, pre-charging one of the complementary bitlines to the global ground voltage, and applying a second voltage higher than the global supply voltage to the access transistors during a write operation to the SRAM cell.Type: ApplicationFiled: September 13, 2011Publication date: March 15, 2012Applicants: IMEC, Katholieke Universiteit Leuven, Stichting IMEC NederlandInventors: Vibhu Sharma, Stefan Cosemans, Wim Dehaene, Francky Catthoor, Maryan Ashouei, Jos Huisken
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Publication number: 20120063496Abstract: Transmitter circuits for generating baseband signals having low receiver-band noise are disclosed. In one embodiment, the transmitter circuit comprises an active filtering-and-amplifying component comprising a first input configured to receive a first input signal, and a first output configured to output a first output signal. The transmitter circuit further comprises a passive filtering component comprising a second input connected to the first output and configured to receive the first output signal, a passive pole arrangement comprising a number of switchable resistance elements and a capacitance element connected across the plurality of switchable resistance elements, and a second output configured to output a second output signal having reduced noise as compared to the first output signal. The transmitter still further comprises a number of feedback loops connecting the passive filtering component to the first input.Type: ApplicationFiled: September 12, 2011Publication date: March 15, 2012Applicants: RENESAS ELECTRONICS CORPORATION, IMECInventors: Vito Giannini, Tomohiro Sano, Mark Ingels, Jan Craninckx
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Publication number: 20120063646Abstract: A system and method for motion detection and the use thereof in video coding are disclosed. In one aspect, a method of defining a region of motion within a video frame in a sequence of video frames comprises loading a current video frame and at least one reference video frame from the sequence, the reference video frame being different from the current video frame. The method further comprises applying filtering operations on the current and the reference video frame in order to obtain at least two scales of representation of the current and the reference video frame. The method further comprises determining for each of the scale representations a video-frame like representation of the structural changes between the current and the reference video frame. The method further comprises combining the video-frame like representations of different scales. The method further comprises determining one or more regions of motion from the combination.Type: ApplicationFiled: August 8, 2011Publication date: March 15, 2012Applicants: Katholieke Universiteit Leuven, IMECInventor: Jiangbo Lu
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Publication number: 20120063252Abstract: An ultra low power sense amplifier circuit for amplifying a low swing input signal to a full swing output signal is disclosed. In one aspect, the amplifier circuit includes a first amplifier stage for pre-amplifying the input signal to an intermediate signal on its internal nodes, a second amplifier stage for amplifying the intermediate signal to the output signal, and a control circuit for sequentially activating the first and second amplifier. The first amplifier has a capacitor for limiting energy consumption and two upsized PMOS transistors without NMOS transistors.Type: ApplicationFiled: September 13, 2011Publication date: March 15, 2012Applicants: IMEC, Stichting IMEC Nederland, Katholieke Universiteit LeuvenInventors: Vibhu Sharma, Stefan Cosemans, Wim Dehaene, Francky Catthoor, Maryam Ashouei, Jos Huisken
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Publication number: 20120062978Abstract: A method of operating by pulse width modulation a micromirror device is disclosed. In one aspect, the method includes providing a micromirror device having a micromirror element electrostatically deflectable around a rotation axis between a first and second position. The micromirror element is controllable by applying voltage signals to a first and second electrode on one side of the rotation axis and a third and fourth electrode on the other side. The method includes associating an intermediate value of intensity to the micromirror element during a time frame, the intensity being between a first value corresponding to the first position and a second value corresponding to the second position. The method includes switching the micromirror element between the first and second position. The intermediate value corresponds to the ratio of periods in the time frame in which the micromirror element is in the first or second position.Type: ApplicationFiled: October 4, 2011Publication date: March 15, 2012Applicants: Universiteit Gent, IMECInventors: Herbert De Smet, Roel Beernaert
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Publication number: 20120064836Abstract: An amplifier circuit is disclosed. In one embodiment, the amplifier circuit includes an input configured to receive an input signal. The amplifier circuit further includes an amplifier connected to the input that is configured to receive the input signal and generate a modulated input signal based on the input signal and one of a first amplification level and a second amplification level. The amplifier comprises a first transistor configured to receive the input signal and a second transistor connected in cascode with the first transistor. The amplifier circuit further includes a switching component configured to switch the amplifier between the first amplification level and the second amplification level. The amplifier circuit still further includes an output connected to the amplifier and configured to output the modulated input signal.Type: ApplicationFiled: September 13, 2011Publication date: March 15, 2012Applicants: IMEC, ESSENSIUM, Universiteit GentInventors: Johan Bauwelinck, Zhisheng Li, Guy Torfs, Jan Vandewege, Xin Yin
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Publication number: 20120062244Abstract: A method and an electronic readout circuit for measuring a capacitance of a MEMS sensor are disclosed. In one aspect, the readout circuit includes: an input stage for receiving a first signal from the sensor and for presenting a second signal; a charge amplifier stage for amplifying and integrating the second signal; and a control logic for controlling the readout circuit according to a predefined timing relation synchronized to actuation voltages applied to the sensor for generating the first signal. The readout circuit may further includes a first switching unit for applying a first reference voltage to the sensor and a second switching unit for applying the second signal to the charge amplifier stage, wherein the first and the second switching units are controlled according to the predefined timing relation such that a plurality of the second signals are accumulated.Type: ApplicationFiled: September 6, 2011Publication date: March 15, 2012Applicant: Stichting IMEC NederlandInventors: Juan Santana, Chris van Liempd, Richard van den Hoven